CN105836919A - Method for removing phosphorus in phosphorus containing wastewater - Google Patents
Method for removing phosphorus in phosphorus containing wastewater Download PDFInfo
- Publication number
- CN105836919A CN105836919A CN201610271581.1A CN201610271581A CN105836919A CN 105836919 A CN105836919 A CN 105836919A CN 201610271581 A CN201610271581 A CN 201610271581A CN 105836919 A CN105836919 A CN 105836919A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F2001/5218—Crystallization
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/12—Inert solids used as ballast for improving sedimentation
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention provides a method for removing phosphorus in phosphorus containing wastewater .Firstly, the pH value of the phosphorus containing wastewater is regulated to be 6-9, at this time, phosphate mainly exists in the form of dihydrogen phosphate and hydrogen phosphate, and then ferric trichloride is added for hydrolysis to form a ferrous hydroxyl compound; hydrolysate and phosphate form colloids, then aluminum polychlorid is added, the colloids formed by phosphate and iron in the wastewater form sediment by means of adsorption, bridging, sweeping and other actions and are removed out of the wastewater, and the purpose of removing phosphorus is achieved .According to the technology, by analyzing the existing state of phosphate in the wastewater, adding different chemicals and controlling operation parameters, phosphate in the wastewater is made to generate the colloidal state substances, and then the colloids are removed out of the wastewater by means of flocculent settling, so that the phosphorus content in the wastewater is reduced to be below 0.5 mg/L and within the range of 0.3-0.4 mg/L generally.
Description
Technical field
The present invention is a kind of high for phosphorus content, and content of organics is low, the new technique of dephosphorization in the industrial wastewater that wastewater biochemical is bad, belongs to Environmental Chemistry field.
Background technology
At present, in industrial wastewater, there are bioanalysis, physical-chemical process etc. in the place to go of phosphorus.
Bioanalysis, mainly by the effect of microorganism, gets rid of the purpose reaching dephosphorization by mud.The absorption of phosphorus mainly by the vital movement of microorganism, is made phosphorus enter in activated sludge, along with discharging except the phosphorus in waste water of mud by polyP bacteria by bioanalysis.Requiring that waste water has a certain amount of content of organics, maintain biological activity, content of organics can not be the highest.Requiring that the Organic substance in waste water has biodegradability, if biochemical difference, effect is undesirable.
Physical-chemical process mainly includes iron salt method, aluminium salt method, lime method etc., mainly by generating corresponding calcium phosphate precipitation with phosphate radical, thus reaches the purpose of dephosphorization.It addition, also include ammonium phosphate magnesium processes in physico-chemical process, phosphate being generated magnesium ammonium phosphate sediment, this precipitation can be used to as fertilizer, is used primarily in phosphorous and that ammonia nitrogen is higher waste water process.From the point of view of physical-chemical process, the factor affecting calcium phosphate precipitation is too many, such as content of beary metal, organic content (having complexing power) etc., make for different industrial wastewaters, waste water composition is the most complicated, and treatment effect is unstable, and waste water processes can not be the most up to standard.
But, the phosphorized waste water for some Surface Processing Industries processes, and it formerly adds Calx and produces phosphatization waste residue, its moisture content is the highest, the phosphorus in waste water content that the dehydration of phosphatization waste residue produces is high, and owing to it had been added to Calx, the effect again adding the physical treatment method such as Calx is poor.And this wastewater through organic matter content is low, it is impossible to use biological dephosphorization dephosphorization.Having again employing ammoniomagnesium phosphate method to have clearly a need for adding substantial amounts of ammonia nitrogen etc., the secondary pollution causing ammonia nitrogen in waste water comparision contents high needs to process, and cost is huge, it is impossible to adapt to dephosphorization demand.
Summary of the invention
The present invention proposes phosphorus-containing wastewater phosphorus removing method, solves the technical problem that in prior art, industry phosphorus waste water uses existing physics or biological method all cannot process.
In order to realize technique scheme, the present invention provides a kind of phosphorus-containing wastewater phosphorus removing method, comprises the steps:
Step 1, detects the phosphorus content in 1 liter of water,
Step 2, is adjusted to as 6-9 by the pH value of phosphorus waste water,
Step 3, the phosphorus content corresponding in step 11 liter of water hydrolyzes ferric chloride；
Step 4, ferric chloride step 3 hydrolyzed is sufficiently mixed with step 1 gained phosphorus waste water, forms ferrum hydroxy compounds, produces phosphate colloid,
Step 5, adds aluminium polychlorid, adsorbs, build bridge and roll up the effect of sweeping, and the colloid that the phosphate radical in waste water and ferrum are formed forms precipitation.
As one group of preferred scheme,
When in step 1, when recording 1 liter of water phosphorus content and being 20-30 mg/L,
Step 3 often processes 1 liter of phosphorus waste water and should hydrolyze 130mg iron chloride accordingly,
Step 4 often processes 1 liter of phosphorus waste water should hydrolyze accordingly and should add 2mg aluminium polychlorid.
As one group of preferred scheme,
When in step 1, when recording 1 liter of water phosphorus content and being 20-30 mg/L,
Step 3 often processes 1 liter of phosphorus waste water and should hydrolyze the iron chloride of 150mg accordingly,
Step 4 often processes 1 liter of phosphorus waste water should hydrolyze accordingly and should add 4mg aluminium polychlorid.
As one group of preferred scheme,
When in step 1, when recording 1 liter of water phosphorus content and being 20-30 mg/L,
Step 3 often processes 1 liter of phosphorus waste water and should hydrolyze the iron chloride of 170mg accordingly,
Step 4 often processes 1 liter of phosphorus waste water should hydrolyze accordingly and should add 6mg aluminium polychlorid.
As one group of preferred scheme,
When in step 1, when recording 1 liter of water phosphorus content and being 20-30 mg/L,
Step 3 often processes 1 liter of phosphorus waste water and should hydrolyze the iron chloride of 200mg accordingly,
Step 4 often processes 1 liter of phosphorus waste water should hydrolyze accordingly and should add 9mg aluminium polychlorid.
Compared with prior art, the present invention provides a kind of phosphorus-containing wastewater phosphorus removing method, and the pH value first regulating phosphorus-containing wastewater is between 6-9, and now phosphate is mainly dihydrogen phosphate and hydrogen phosphate exists, and is subsequently adding ferric chloride, and hydrolysis forms ferrum hydroxy compounds.This hydrolyzate and phosphate form colloid, are subsequently adding aluminium polychlorid, by absorption, build bridge and roll up and the colloid that effect forms the phosphate radical in waste water and ferrum such as sweep and form precipitation, remove, reach the purpose of dephosphorization from waste water.This technology is by analyzing the existence of phosphate in waste water, by adding different medicaments, the control of operating parameter, the phosphate in waste water is made to generate colloidal state material, then from waste water, colloid is removed by flocculation sediment, the content making Phosphorus From Wastewater is down to below 0.5mg/L, typically at 0.3-0.4mg/L.Process for such waste water and provide a new technique.The secondary pollution of waste water will not be formed, significant.
Detailed description of the invention
It is clearly and completely described below in conjunction with the embodiment of the present invention, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
A kind of phosphorus-containing wastewater phosphorus removing method that the present invention provides
First take a certain amount of phosphorus-containing wastewater, it is desirable to the content of the phosphorus in phosphorus waste water is at 20-30 mg/L, when being unsatisfactory for condition, content conditioning can be carried out, do not repeat at this.The pH value of phosphorus waste water is adjusted to 6-9, add a certain amount of iron chloride 130-200mg/L, quickly stirring 1-2 minute, general 100-200 rev/min of rotating speed, stirring forms it into iron salt colloid, adds aluminium salt 2-9 mg/L, low rate mixing 3-5 minute, general 40-60 rev/min of rotating speed, removes colloid formation precipitation and reaches the purpose of dephosphorization.Rotate, the purpose of stirring is the ongoing reaction rate of accelerated test.Should know that iron chloride content is the highest altogether, reaction rate is the fastest, otherwise the slowest simultaneously.
Example one:
First take the phosphorus-containing wastewater of 1L, the content 20-30 mg/L of phosphorus, regulation pH value is 6-9, add the iron chloride of 130mg, quickly stirring 2 minutes, rotating speed 100 revs/min so that it is form iron salt colloid, add aluminium polychlorid 2mg, low rate mixing 5 minutes, speed of agitator 40 revs/min, form precipitation, remove colloid, reach the purpose of dephosphorization.Recording process Phosphorus From Wastewater content is 0.33 mg/L, stains phenomenon without other secondary.
Example two:
First taking the phosphorus-containing wastewater of 1L, the content of phosphorus is 6-9 at 20-30 mg/L, regulation pH value, add the iron chloride of 150mg, quickly stirring 2 minutes, rotating speed 160 revs/min so that it is form iron salt colloid, add aluminium polychlorid 4mg, low rate mixing 4 minutes, rotating speed 50 revs/min, form polymeric precipitation, remove colloid, reach the purpose of dephosphorization.Recording process Phosphorus From Wastewater content is 0.32 mg/L, stains phenomenon without other secondary.
Example three:
First taking the phosphorus-containing wastewater of 1L, the content of phosphorus is 6-9 at 20-30 mg/L, regulation pH value, add the iron chloride of 170mg, quickly stirring 1 minute, rotating speed 180 revs/min so that it is form iron salt colloid, add aluminium polychlorid 6mg, low rate mixing 4 minutes, rotating speed 60 revs/min, form polymeric precipitation, remove colloid, reach the purpose of dephosphorization.Recording process Phosphorus From Wastewater content is 0.31 mg/L, stains phenomenon without other secondary.
Example four:
First taking the phosphorus-containing wastewater of 1L, the content of phosphorus is 6-9 at 20-30 mg/L, regulation pH value, add the iron chloride of 200mg, quickly stir, 1 minute, rotating speed 200 revs/min, form it into iron salt colloid, add aluminium polychlorid 9mg, low rate mixing 3 minutes, rotating speed 60 revs/min, form polymeric precipitation, remove colloid, reach the purpose of dephosphorization.Recording process Phosphorus From Wastewater content is 0.31 mg/L, stains phenomenon without other secondary
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (5)
1. a phosphorus-containing wastewater phosphorus removing method, it is characterised in that comprise the steps:
Step 1, detects the phosphorus content in 1 liter of water,
Step 2, is adjusted to as 6-9 by the pH value of phosphorus waste water,
Step 3, the phosphorus content corresponding in step 11 liter of water hydrolyzes ferric chloride；
Step 4, ferric chloride step 3 hydrolyzed is sufficiently mixed with step 1 gained phosphorus waste water, forms ferrum hydroxy compounds, produces phosphate colloid,
Step 5, adds aluminium polychlorid, adsorbs, build bridge and roll up the effect of sweeping, and the colloid that the phosphate radical in waste water and ferrum are formed forms precipitation.
Phosphorus-containing wastewater phosphorus removing method the most according to claim 1, it is characterised in that:
When in step 1, when recording 1 liter of water phosphorus content and being 20-30 mg/L,
Step 3 often processes 1 liter of phosphorus waste water and should hydrolyze 130mg iron chloride accordingly,
Step 4 often processes 1 liter of phosphorus waste water should hydrolyze accordingly and should add 2mg aluminium polychlorid.
Phosphorus-containing wastewater phosphorus removing method the most according to claim 2, it is characterised in that:
When in step 1, when recording 1 liter of water phosphorus content and being 20-30 mg/L,
Step 3 often processes 1 liter of phosphorus waste water and should hydrolyze the iron chloride of 150mg accordingly,
Step 4 often processes 1 liter of phosphorus waste water should hydrolyze accordingly and should add 4mg aluminium polychlorid.
Phosphorus-containing wastewater phosphorus removing method the most according to claim 1, it is characterised in that:
When in step 1, when recording 1 liter of water phosphorus content and being 20-30 mg/L,
Step 3 often processes 1 liter of phosphorus waste water and should hydrolyze the iron chloride of 170mg accordingly,
Step 4 often processes 1 liter of phosphorus waste water should hydrolyze accordingly and should add 6mg aluminium polychlorid.
Phosphorus-containing wastewater phosphorus removing method the most according to claim 1, it is characterised in that:
When in step 1, when recording 1 liter of water phosphorus content and being 20-30 mg/L,
Step 3 often processes 1 liter of phosphorus waste water and should hydrolyze the iron chloride of 200mg accordingly,
Step 4 often processes 1 liter of phosphorus waste water should hydrolyze accordingly and should add 9mg aluminium polychlorid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610271581.1A CN105836919A (en) | 2016-04-28 | 2016-04-28 | Method for removing phosphorus in phosphorus containing wastewater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610271581.1A CN105836919A (en) | 2016-04-28 | 2016-04-28 | Method for removing phosphorus in phosphorus containing wastewater |
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| CN201610271581.1A Pending CN105836919A (en) | 2016-04-28 | 2016-04-28 | Method for removing phosphorus in phosphorus containing wastewater |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107324474A (en) * | 2017-09-05 | 2017-11-07 | 成都锐达机电实业有限公司 | Efficient dephosphorization agent and its preparation method and application |
| CN108033653A (en) * | 2018-01-08 | 2018-05-15 | 浙江利欧环境科技有限公司 | A kind of addition method of city domestic sewage dephosphorization agent and alkali |
| CN108218118A (en) * | 2018-01-08 | 2018-06-29 | 浙江利欧环境科技有限公司 | A kind of city domestic sewage MBBR+MBR biological carbon and phosphorous removals device and denitrification and dephosphorization method |
| CN108249540A (en) * | 2018-01-08 | 2018-07-06 | 浙江利欧环境科技有限公司 | A kind of city domestic sewage NEW TYPE OF COMPOSITE dephosphorization agent and its preparation and application |
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| KR20110078918A (en) * | 2009-12-31 | 2011-07-07 | 코오롱생명과학 주식회사 | A composition for removing phosphorus |
| CN104817240A (en) * | 2015-05-20 | 2015-08-05 | 余素萍 | Treatment method of phosphorus-containing sewage |
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2016
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Patent Citations (3)
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| KR20110078918A (en) * | 2009-12-31 | 2011-07-07 | 코오롱생명과학 주식회사 | A composition for removing phosphorus |
| CN105271491A (en) * | 2014-07-18 | 2016-01-27 | 重庆市昂多环境治理有限责任公司 | Water purifying agent production method |
| CN104817240A (en) * | 2015-05-20 | 2015-08-05 | 余素萍 | Treatment method of phosphorus-containing sewage |
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| 李辉洋: "饮用水中痕量磷的去除试验研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107324474A (en) * | 2017-09-05 | 2017-11-07 | 成都锐达机电实业有限公司 | Efficient dephosphorization agent and its preparation method and application |
| CN107324474B (en) * | 2017-09-05 | 2020-08-18 | 成都锐达机电实业有限公司 | Efficient phosphorus removal agent and preparation method and application thereof |
| CN108033653A (en) * | 2018-01-08 | 2018-05-15 | 浙江利欧环境科技有限公司 | A kind of addition method of city domestic sewage dephosphorization agent and alkali |
| CN108218118A (en) * | 2018-01-08 | 2018-06-29 | 浙江利欧环境科技有限公司 | A kind of city domestic sewage MBBR+MBR biological carbon and phosphorous removals device and denitrification and dephosphorization method |
| CN108249540A (en) * | 2018-01-08 | 2018-07-06 | 浙江利欧环境科技有限公司 | A kind of city domestic sewage NEW TYPE OF COMPOSITE dephosphorization agent and its preparation and application |
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Application publication date: 20160810 |